I’ll come back here shortly and edit this post concerning these baking sheets. Putting the pic up from my phone, but too much to peck away at on this little keyboard. I’ll edit the post from my office computer here shortly.
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Edit -- backstory on these baking sheets. Got so damn tired of going through flimsy ass baking sheets over the years, that would either warp, non-stick coating come off, rust...or a combination of all three. Got down, again, to every baking sheet I had, had to be covered with foil before it could be used. So I went on a mission a good while back to solve this problem once and for all...and ended up with these. Got them on Amazon...mfg is Gridmann. Sizes are 9" x 13", 13" x 18", and 15' x 21", all with 1" lips, and purchased six each. Can purchase them individual, by six, or by a dozen. These are commercial grade, HEAVY, thick, all-aluminum baking sheets. IIRC, the 9" x 13" set of six was $40...13" x 18" set of six was $44...15" x 21" set of six was $54. The best baking sheets I've ever had, bar none. And the warping, rusting, no more coating coming off days are history. All these sizes fit in a standard oven, even the 15" x 21". Now Gridmann makes a size even bigger...18" x 26" but don't need nothing that size (I'm sure it's fine in commercial kitchen applications). The 9" x 13" and 13" x 18" will fit in the dishwasher, have to hand wash the 15" x 21" size but no biggie. One thing I like about the 13" x 18" size is they sit on top of my wire-rack shelves in the Smoke Hollow 44" vertical smoker perfectly if I want to use them there, and obviously the 9" x 13" sheets certainly fit in the smoker as well.
I like to research things before I pull the trigger, most of y'all probably know that...and these baking sheets certainly fit the bill. I wouldn't waste my time writing this if these were not the real deal. If you're looking for damn good, heavy all-aluminum baking sheets to buy for either the oven, smokers, grills, etc, etc, for what I think will be the last ones you'll purchase (and do the math per each sheet when buying them by a set of six), you simply can't go wrong.
Edit to the edit -- pic only shows four of the 13" x 18" baking sheets in the middle stack...two of my sisters beat me out of one each...go figure!
Carry on gents!